What is the difference between chess games?


Names correspond to time controls. Blitz games are typically about 5 to 10 minutes per side, bullet is the fastest and the name is usually reserved for games of about 1-3 minutes per side but these names can vary. Depending on who you ask they may be familiar with different names for time settings. If you want an official definitions try googling USCF blitz chess or look at this https://en.wikipedia.org/wiki/Fast_chess for more info.

https://support.chess.com/customer/en/portal/articles/1444851-why-are-there-three-different-ratings-in-live-chess-
Specifically for the sites naming of time controls